# Simple Zones vs FDI.me

The clearest difference is in-app purchases: FDI.me at none against Simple Zones's 2. Simple Zones's advantage is update cadence (monthly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Simple Zones sells 2 one-off in-app purchases. FDI.me asks for nothing beyond the download.

Simple Zones ships an update monthly, FDI.me every 3 months. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Simple Zones | FDI.me |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (50 ratings)](https://appshunter.io/ios/app/simple-zones/id1533922808/reviews)** | — |
| Number of ratings | **50** | — |
| Positive reviews | 54.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 49 MB |
| Requires iOS | 15.4 | **14.0** |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bred Ventures Inc](https://appshunter.io/developer/897222461) | [Dmitrii Minin](https://appshunter.io/developer/1871174071) |

## What reviewers say

### Simple Zones

[App page](https://appshunter.io/ios/app/simple-zones/id1533922808)

Track your workouts in real-time using heart rate zone training. Get instant feedback on your performance to optimize intensity and achieve your fitness goals. Supports Apple Watch and Bluetooth heart rate monitors.

**Highlights:** Real-time heart rate zone visualization, Apple Watch and Bluetooth HRM support, Customizable zone models, Apple Health integration, Workout data syncing, Activity ring tracking

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zones Pro | $4.99 | one-time |
| Zones Pro | $9.99 | one-time |


### FDI.me

[App page](https://appshunter.io/ios/app/fdime/id6770261786)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Simple Zones free?

Simple Zones is free to download, with in-app purchases available.

### Is FDI.me free?

FDI.me is free to download, with no in-app purchases.

### Do Simple Zones or FDI.me have ads?

Neither Simple Zones nor FDI.me shows ads.

### Which is updated more often, Simple Zones or FDI.me?

Simple Zones ships an update monthly, and FDI.me every 3 months. Most recently, Simple Zones was updated on October 24, 2026 and FDI.me on October 11, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*